Developments and application of chitosan-based adsorbents for wastewater treatments

Bhatt, Pankaj; Joshi, Samiskha; Bayram, Gulsum Melike Urper; Khati, Priyanka; Simsek, Halis

doi:10.1016/j.envres.2023.115530

Cited by 84 publications

(15 citation statements)

References 251 publications

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“…The natural adsorptive polymer chitosan (CS) has an affinity for contaminants in wastewater because it contains amino (-NH 2 ) and hydroxyl (-OH) groups. 37 However, it lacks mechanical strength and suffers from poor stability, which results in inefficient regeneration. Furthermore, it is difficult to use chitosan powder or flake forms due to its low porosity, low surface area, resistance to mass transfer, and high crystallinity.…”

Section: Adsorption-based Separationmentioning

confidence: 99%

Porous organic polymers as a promising platform for efficient capture of heavy metal pollutants in wastewater

Gomez-Suarez,

Chen,

Zhang

2023

Polym. Chem.

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Section: Adsorption-based Separationmentioning

confidence: 99%

Porous organic polymers as a promising platform for efficient capture of heavy metal pollutants in wastewater

Gomez-Suarez,

Chen,

Zhang

2023

Polym. Chem.

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“…It is also biocompatible and highly abundant, biodegradable and sustainable, non-toxic, and renewable and has an adaptable surface chemistry and a high surface area, and a relatively low production cost. These beneficial characteristics make CS a versatile ecological material, usable in water purification, biofiltration, pollutant removal, and wastewater treatment [ 83 , 84 , 85 ]. CS is widely used in many other applications such as in biomedicine and pharmaceutics, agriculture, environmental sensing, cosmetics, nutritional enhancement, surface biosensor applications, fabrics and textiles, veterinary medicine, and food processing.…”

Section: Categories Of Chitosan-based Hydrogels For Water Purificatio...mentioning

confidence: 99%

Chitosan Hydrogels for Water Purification Applications

Chelu,

Musuc,

Popa

et al. 2023

Gels

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Chitosan-based hydrogels have gained significant attention for their potential applications in water treatment and purification due to their remarkable properties such as bioavailability, biocompatibility, biodegradability, environmental friendliness, high pollutants adsorption capacity, and water adsorption capacity. This article comprehensively reviews recent advances in chitosan-based hydrogel materials for water purification applications. The synthesis methods, structural properties, and water purification performance of chitosan-based hydrogels are critically analyzed. The incorporation of various nanomaterials into chitosan-based hydrogels, such as nanoparticles, graphene, and metal-organic frameworks, has been explored to enhance their performance. The mechanisms of water purification, including adsorption, filtration, and antimicrobial activity, are also discussed in detail. The potential of chitosan-based hydrogels for the removal of pollutants, such as heavy metals, organic contaminants, and microorganisms, from water sources is highlighted. Moreover, the challenges and future perspectives of chitosan-based hydrogels in water treatment and water purification applications are also illustrated. Overall, this article provides valuable insights into the current state of the art regarding chitosan-based hydrogels for water purification applications and highlights their potential for addressing global water pollution challenges.

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“…Lately, biosorption approaches using renewable and sustainable materials such as lignin, banana and pomegranate peels, activated carbon from agro-residues, agricultural waste from shells, fibers, husks, straw, etc. have been developed [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

A sustainable bioprocess to produce bacterial cellulose (BC) using waste streams from wine distilleries and the biodiesel industry: evaluation of BC for adsorption of phenolic compounds, dyes and metals

Tsouko,

Pilafidis,

Kourmentza

et al. 2024

Biotechnol Biofuels

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Background The main challenge for large-scale production of bacterial cellulose (BC) includes high production costs interlinked with raw materials, and low production rates. The valorization of renewable nutrient sources could improve the economic effectiveness of BC fermentation while their direct bioconversion into sustainable biopolymers addresses environmental pollution and/or resource depletion challenges. Herein a green bioprocess was developed to produce BC in high amounts with the rather unexplored bacterial strain Komagataeibacter rhaeticus, using waste streams such as wine distillery effluents (WDE) and biodiesel-derived glycerol. Also, BC was evaluated as a bio-adsorbent for phenolics, dyes and metals removal to enlarge its market diversification. Results BC production was significantly affected by the WDE mixing ratio (0–100%), glycerol concentration (20–45 g/L), type of glycerol and media-sterilization method. A maximum BC concentration of 9.0 g/L, with a productivity of 0.90 g/L/day and a water holding capacity of 60.1 g water/g dry BC, was achieved at 100% WDE and ≈30 g/L crude glycerol. BC samples showed typical cellulose vibration bands and average fiber diameters between 37.2 and 89.6 nm. The BC capacity to dephenolize WDE and adsorb phenolics during fermentation reached respectively, up to 50.7% and 26.96 mg gallic acid equivalents/g dry BC (in-situ process). The produced BC was also investigated for dye and metal removal. The highest removal of dye acid yellow 17 (54.3%) was recorded when 5% of BC was applied as the bio-adsorbent. Experiments performed in a multi-metal synthetic wastewater showed that BC could remove up to 96% of Zn and 97% of Cd. Conclusions This work demonstrated a low-carbon approach to produce low-cost, green and biodegradable BC-based bio-adsorbents, without any chemical modification. Their potential in wastewater-treatment-applications was highlighted, promoting closed-loop systems within the circular economy era. This study may serve as an orientation for future research towards competitive or targeted adsorption technologies for wastewater treatment or resources recovery.

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Developments and application of chitosan-based adsorbents for wastewater treatments

Cited by 84 publications

References 251 publications

Porous organic polymers as a promising platform for efficient capture of heavy metal pollutants in wastewater

Porous organic polymers as a promising platform for efficient capture of heavy metal pollutants in wastewater

Chitosan Hydrogels for Water Purification Applications

A sustainable bioprocess to produce bacterial cellulose (BC) using waste streams from wine distilleries and the biodiesel industry: evaluation of BC for adsorption of phenolic compounds, dyes and metals

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